Boiler cleaner



June 9,- 1931. N. L. SNOW ET AL 1,809,221 I BOILER CLEANER Filed Sept. 22, 1924 I5 Sheets-Sheet 1 A j x ,2 I 11/11 1111 I 1/ II IIIIIIIIIIIIIIIIII I Qttomwqf June 9, 1931. N. SNOW ET AL BOILER CLEANER Filed Sept. 22, 1924 5 Sheets-Sheet 2 a vwcwtow A a/791 an Z. $720M Clarence 1' A! I'm Zfdd WW MMQVW June -9,- 1931. N. L. SNOW ET AL 1,809,221

BOILER CLEANER Filed Sept. 22, 1924 s Sheets-Shet 5 lvwemtow flormaw LT Snaw Patented June 9, 1931 UNITED STATES PA NT .oFFlcE 1 '7 NORMAN nsnowfnnn cnAnENcE r. .Hmsnrnnn, or DETROIT, MICHIGAN, Assieirons 'ro DIAMOND rowan srnciAt'ryconronA'rion, or DETROIT, MICHIGAN, soon-a ronATIoN or MICHIGAN BOILER CLEANER ,Application filed September 22,1924; Serial No. 739,128.

The invention relates to boiler cleaners,

ment projecting through. the 'boilersetting,

air from outside thejboiler setting being inj ected into-the blower;

Figure 2 is a: sectional view showing a modification in which air outside the boiler setting is conducted to the blower nozzles, injection taking place at each nozzle; I

Figure 3 is a sectional viewshowing a fur-. ther modification in which air'is conduct-ed within the cleaning fluid pipe, injection taking place at each nozzle; 1 I Figure 4 is asectional view of a further modification in which furnace gases are .injected into the blower; V .7 Figure 5 is a view along the line 5'5 of Figure 4;

Figure 6 1s a sectional view of a further modification inwhich furnace gases are conducted along the cleaning fluid supply pipe, injection taking place at each nozzle;

Figure 7 is a view along the line 77 of Figure 6;

Figure 8 is a viewshowing a blower of the type disclosed in Figure 1 applied'to a valved blower head and; I I 1 I Figure-9 is a view showing a modification in which furnace gases are injectedinto the blower. I

Referring to Figure 1 reference character 10 indicates the boiler setting or wall'having the wall box 11. Extending through the wall box is the blower pipe 12 having a 'plurality of nozzles 13 suitably located to direct the cleaning'fluid against the boilertubes and other parts'of the'boiler to. be cleaned.-

The end of the blower pipe 12 extends outside theboiler setting wall box 11 and receives the end of the cleaning fluid supply pipe 14 which terminatesin aninjectornozzle 15; *Ribs 16 support the nozzle 15 in itsposition and also ermit assage of .air through ports 17 ormed etween the ribs. l

In operation steam or uthercleaning fluid is supplied under'pressure through the pipe 14, the injector nozzle 15 entraining air from outside of the boiler setting, the air being forced through ports 17 where it is mixed withthecleaning fluid discharged from the injector ,nozzle 15.

j The mixture'is then conducted along blower pipe 12. and is discharged through. the nozzles 13 to clean theparts of the boiler. The blower pipe is preferably, r0- tated duringvthe blowing operation in any suitable manner such 'as disclosed in Figures 5 3,8and9. H '2' 1 In Figure '2 cleaning fluid such as steam is': supplied through pipe 14. Surrounding this pipe and spaced therefrom is an air supply pipe 18 havinga flared end '19 outside'the oiler setting 10. Ribs 20 holdthe pipes 18 and 14 in fixed relation, air passages'21 being provided between the 1 ribs. The air'supply pipe is provided with nozzles 22 axially aligned with nozzles 13.

- In operation steam is supplied through the pipe 14 and is ejected through the nozzles 13 and 22, air from ports 21being conducted along pipe 18 and ej ected; through nozzles 22 by the action of the steam escaping through the ejector nozzles'13, The mixture then im pinges upon the surfaces to be cleaned.

1 B ferring to Figure 3, cleaning fluid such as steam is supplied through the pipe 23 to 'the. pipe-24 having the injector-nozzles 25'. Extending within and spaced from the.

steam pipe 24 isan airjsupply pipe26having an inlet '27 outside the boiler setting. The air pipe 26 is provided with a plurality of nozzles 28 axially aligned within the steamnozzles 25 and terminating adjacent the outlet ofthe' steam nozzles whereby air. will. be

entrainedwithithe steam. =A chain sheave 29 is preferably provided to permitrrotation of theair andrsteam pipes during'the blowing operation.

Referring to the modification disclo'sedin Figure 4, the cleaningfiuid supply pipe .14

extends within the'boiler setting10. The

nozzle 15 and the inlet ports 17 y are therefore so located that the furnacegases will be ejected through the ports 17 and mixedwith I the cleaning fluid ejected from nozzle 15.

The coi'istruct ionand operation ethe'rwis'e eerrespendewith Figures Figure 6 likewise is provided with the cleaning fluid supply pipe 14 which extends within the boiler setting 10 whereby furnace gases are entrained in the system through ports 21 and discharged through nozzles 22 in a manner corresponding to the construction and operation described above in connection with the disclosure in FigureQ.

lieferring to Figure 8, A represents a valved blower .head,steam or other cleaning fluid being supplied through pipe 30, past a valve (not shown), through the goose-neck 31, and into pipe 32 where the steam escapes through the. injector nozzle 33 where it entrains air through ports 34,, the air passing from outside the boiler setting 10 through ports 34 where it enters the blower pipe 35.

. The mixture of air and steam is then conductedal'ong the blower pipe 35' to the nozzles 36 where the mixture is ejected'to clean the. boiler tubes 37 and other parts of'th'e boiler.

-The blower head A comprises a chain sheave 3-8 for rotating pinion 39 meshing with gearAO. The gear 40 carries a cam 41 which engages valve stem 42 to unseat the valve (not shown) when the blower pipe is being .operated The blower pipe 35 is connected to rotate with the gear 40. V

In operation chain sheave 38 is rotated to unseat the blower valve and'rotate the blower pipe 35. Unseating the blower valve per= mits steam to pass from pipe 30 to head 31 and thence to injector nozzle 33. As the steam leaves-the nozzle '33 air from outside the boiler setting 10 will be entrained and forced along blower pipe 35 where the mixtureof air and steam will pass out ofthe nozzles 36 and impinge uponthe parts of the boiler to be cleaned.

. In the modification shown in Figure 9, the blower head A is constructed and operated similarly to that disclosed in Figure 8. In Figure 9 the steam .pipe 32 extends through the boiler setting and. terminates in an injector nozzle around which furnace gases are entrained as described in connection with the blower shown in Figure 4.

While itis'preferred to use steam as a cleaning medium, other fluids such as air,

etc.,.couldbe' used.

What we claim as our invention is 1. In a boiler cleaner, a cleaning fluid sup ply pipe, a blower pipe, means for entraining a second fluid with the cleaning fluid and "conveying the mixture to the blower pipe, said means including an extension on said blower pipe having a portion surrounding said supply pipe but spaced therefrom to provide apassage for the 'saidsecond fluid around said supply pipe,-and means for rotating said. blower pipe and starting the flow of the cleaning fluid in timed relation.

2. In a boiler cleaner, a cleaning fluid supply-pipe terminating outside theboiler set ting in an injector nozzle, a blower pipe con nected to said supply pipe and having an end surrounding the injector nozzle and spaced therefrom to provide air ports, said blower pipe having a plurality of cleaner nozzles and means for rotating said blower pipe and starting the flow of cleaning fluid in time-d relation to entrain air with the cleaning fluid.

3-. In a boiler cleaner, a cleaning fluid supply pipe having an ector nozzle positioned outside the boiler setting, the discharge of cleaning fluid from said nozzle acting to entrain air therewith, and means for conducting the mixture to a boiler cleaner nozzle, said means including a blower pipe having a flared end open to the outside of the boiler setting and adjacent said injector nozzle.

4. In a boiler cleaner, a cleaning fluid supply pipe having an injector nozzle positioned outside of the boiler setting, said injector nozzle being of Venturi form, the discharge of cleaning fluid from said nozzle acting to entrain air therewith, and means including a blower p-ipe terminating in an open end outside the boiler setting adjacent said injector, nozzle for conducting the mixture to a boiler cleaner nozzle.

5. In a boiler cleaner, a cleaning fluid supply pipe having an injector nozzle, said noz zle being of Venturi form and provided with a throat of relatively small diameter, a nozzle pipe extending adj acent the parts of the boiler to be cleaned, a pipe provided with an enlarged open end connected to said nozzle pipe and extending adjacent the injector nozzle, said injector nozzle being so positioned as to discharge into said enlarged end of said second named pipe, the discharge of cleaning fluid from said injector nozzle acting to entrain a second fluid therewith, and means for conducting the mixture to a boiler cleaner nozzle,-

' 6. A boiler cleaner including in combination, a blower pipe terminating in an enlarged end, a cleaning fluid supply pipe having an injector nozzle positionedto discharge cleaning fluid into the enlarged end of the said blower pipe, means for rotating the supply pipe, and means for transmitting the rotation of the said supply pipe to the said blower pipe. 7 1 r I v 7, A boiler cleaner including incombination, a blowerpipe terminating in an enlarged end, a cleaning fluid sup-ply pipe having an injector nozzle positionedto discharge cleaning fluid into the enlarged end of the said blower pipe,means for rotating the said supply pipe, means for controlling the flow of cleaning fluid to the supply pipe in dependence upon the rotation of thesame, and means for transmitting the rotary movement of the supply pipe to the blower pipe whereby the discharge of cleaning fluid from the blower pipe will be in timed relation to the rotation of the same.

'8. The combination with a boiler wall, a

, of air and cleaning fluid to said blower element.

9; In a boiler cleaner, the combination with a boiler wall and a blower head mounted exteriorly of said wall and spaced from the same, of a pipe journaled in said head, a nozzle carried by said pipe, a blower element proj ecting through said boiler wall and having its inlet end arranged in axial alignment with said nozzle, ribs connecting the inlet end of said blowerelement to said nozzle providing passages for a second fluid into said blower element around said nozzle, andmeans for controlling the flow of cleaning fluid through said head to said pipe. 7

10. In a boiler cleaner, a rotatable blower pipe terminating in an enlarged end, a rotatable cleaning fluid supply pipe having a nozzle positioned to discharge cleaning fluid into the enlarged end of the blower pipe, means for rotating the said supply pipe, a valve controlling the flow of cleaning fluid through the said supply pipe, means for actuating said valve in dependence upon the rotationof said supply pipe, and ribsrigidly connecting the said nozzle to the enlarged end of the blower pipe whereby the blower pipe rotates with the said sup-ply pipe, said ribs providing passages for a second fluid around said nozzle and communicating with said blower pipe whereby the said second fluid is entrained with the first-mentioned cleaning fluid in its passage from the said supply pipe 7 to the blower pipe.

11. In a boiler cleaner, a blower head, a cleaning fluid supply pipe journaled in said head, a nozzle formed on the outlet end of said supply pipe, a valve for controlling the flow of cleaning fluid through said supply pipe, means for rotating said supply pipe, means for actuating said valve upon rotation of said supply pipe, a blower pipe having an enlarged end surrounding the nozzle on said supply pipe in spaced relation to the same for receiving cleaning flui-d therefrom, and ribs rigidly connecting the enlarged end of the blower pipe to the said nozzle.

12. In a boiler cleaner, a rotatable blower pipe terminating outside of the boiler setting in an enlarged end, a cleaning fluid supply pipe terminating in an injector nozzle arranged within the enlarged end of the blower pipe, ribs connecting the enlarged endof the blower pipe to the said injector nozzle, said ribs being arranged tosupport the injector nozzle'within the enlarged end of the blower pipe while permitting the passage of air I around the injector nozzle into theblower pipe for entrainment with the cleaning fluid, and means for'rotating said supply pipe and said blower pipe as'a unit. C r

1'3. Ina boiler cleaner, the combination with a boiler wall and a blower head arranged exteriorly of said wall, of a cleaning fluid supply pipe journaled in said head, said cleaning fluid supply :pipe terminating in an injector nozzle, a blower pipe projecting through the boiler wall and having an enlarge d end arranged exteriorly'of said wall forreceiving said injector nozzle, means for.

rotating said supply pipe, means for controlling the flow of cleaning fluid through said supply pipein dependence uponthe rotation thereof, and ribs 'connecting'the enlarged end of the blower pipe to said injector nozzle whereby said blower pipe rotates with the said supply pipe, said ribs being arranged to support the injector nozzle within the enlarged end of theblower pipe while permitting the passage of air around the injector nozzle into the blower pipe for entrainment with the cleaning fluid.

14:. In aboiler cleaner, the combination with a boiler wall and a blower head arranged exteriorly ofsaid wall, of a cleaning fluid supply pipe journaled in said head,

said cleaningfluid supply pipe terminating in an injector nozzle of Venturi form, a blower pipe projecting through the boiler wall and having an enlarged end arranged eXteriorly of the boiler wall for receiving said injector nozzle, a gear fixed to said supply pipe for rotating the same, a valve for controlling the flow of cleaning fluid through said supply pipe, a cam fixed to said gear for actuating said valve upon rotation of said supply pipe,- and ribs connecting the enlarged end of said blower pipe to said injector nozzle whereby said blower pipe rotates with said supply pipe, said ribs'beingarranged to support the injector nozzle within the enlarged end of the blower pipe while permitting the passage of air around the injector nozzle into the blower pipe for entrainment with the cleans a to be cleaned, means for rotating the blower pipe, and means for controlling the flow of cleaning fluid to the blower pipe in timed relation to the rotation thereof. a

16. In a boiler cleaner, a cleaning fluid supply pipe, a blower pipe arranged to receive cleamng fluid from said supply pipe and provided with a plurality of discharge lOO nozzles, means forconducting a second cleaning fluid to adjacent said nozzles, means for entraining the second fluid with the cleaning fluid at each of said nozzles for discharge I 5 with the cleaning fluid adjacent the portions of the boiler to be cleaned, means for rotating the blower pipe, and means for controlling the flow of cleaning fluid to the blower pipe in timed relation to the rotation thereof.

10 17. In a boiler cleaner, a blower element having a plurality of nozzles spaced throughout its lengthfor discharging cleaning fluid adjacent portions of a boiler to be cleaned, and means for conducting to adjacent each of 15 said nozzles a second cleaning fluid, the arrangement being such that the second clean ing fluid is entrained with the first mentioned cleaningfiuid at each of said nozzles upon discharge of the first mentioned cleaning fluid through the said nozzles.

In testimony whereof We affixour signatures.

NORMAN L. SNOW. CLARENCE FpHIRSI-IFELD. 

